Reactive yellow &#39; -sulfatoethylsulfonyl phenylazo-4-(1-substituted phenyl-3-methyl-5-amino)-pyrazole dyes

ABSTRACT

WHEREIN THE BENZENE NUCLEUS A means the same as above; and thereafter treating the resulting mono-azo dye having a hydroxy group as Y in the formula II with sulfuric acid to convert the Beta -hydroxyethyl sulfone group to Beta -sulfatoethylsulfonyl group, and may be used for dyeing fibers a bright yellow shade with excellent fastness to light and washing.   WHEREIN EACH X1 and X2 mean the same as above and Y represents a hydroxy group or -OSO3H group with 1-substituted phenyl-3-methyl5-amino-pyrazole represented by the formula   WHEREIN X1 and X2 can each represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a carboxyl group, or a sulfonic acid group, and the nucleus A has at least one sulfonic acid group, and may have other substituents, is prepared by coupling a diazotized amine represented by the formula   A reactive yellow dye having the formula

United States Patent 11 1 Sugiyama et al.

1 1 Jan.7, 1975 [73] Assignee: Sumitomo Chemical Co., Ltd., Osaka, Japan 221 Filed: Feb. 24-, 1969 21 Appl. No.: 801,795

[30] Foreign Application Priority Data Feb. 28, 1968 Japan 43-13104 Feb. 28, 1968 Japan 43-13105 [52] US. Cl 260/163, 8/41 R, 8/50,

260/310 R, 260/458, 260/509, 260/575 1511 Int. CL... C09b 26/38, C091) 62/82, D06p 1/38 [58] Field of Search 260/163 [561 References Cited UNITED STATES PATENTS 2,670,265 2/1954 Heyna et al 260/163 2,728,762 12/1955 Hcyna et a1 260/163 Primary Examiner-Floyd D. Higel Attorney, Agent, or Firm-Sughrue, Rothwell, Mion, Zinn and Macpeak [57] ABSTRACT A reactive yellow dye having the formula o ca ca osow NHZ wherein X, and X can each represent hydrogen atom. a lower alkyl group, a lower alkoxy group, a halogen atom, a carboxyl group, or a sulfonic acid group, and the nucleus A has at least one sulfonic acid group, and may have other substituents, is prepared by coupling a diazotized amine represented by the formula SOZCHZCHZY wherein each X and X mean the same as above and Y represents a hydroxy group or -OSO H group with l-substituted phenyl-3-methyl-5-amino-pyrazole represented by the formula whe rein the benzene nucleus A means the same as above; and thereafter treating the resulting mono-azo dye having a hydroxy group as Y in the formula 11 with sulfuric acid to convert the B-hydroxyethyl sulfone group to B-sulfatoethylsulfonyl group, and may be used for dyeing fibers a bright yellow shade with excellent fastness to light and washing.

' (III) 8 Claims, N0 Drawings REACTIVE YELLOW B-SULFATOETHYLSULFONYL PHENYLAZO-4-(lSUBSTITUTED PHENYL 3-METHYL-5-AMINO)-PYRAZOLE DYES BACKGROUND OF THE INVENTION SUMMARY OF THE INVENTION The present invention relates to a novel yellow monoazo dye and to a process for preparing the same. More particularly, the invention relates to a novel yellow monoazo dye having the formula OZCHZCHZOSO3H wherein X, and X can each represent a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a carboxyl group, or a sulfonic acid group, and the nucleus A has at least one sulfonic acid group and may have other substituents, and to a process for preparing the same.

The novel reactive dye of the present invention defined above may generally be prepared by coupling a diazotized amine represented by the formula X NH so cn cn v wherein X and X have the same meaning as defined above, and Y represents a hydroxy group or an O- SO H group, with a l-substituted phenyl-3-methyl-5- amino-pyrazole represented by the formula Thus, one object of the present invention is to provide a novel yellow monoazo dye. Another object of the present invention is to provide a process for preparing the same, and a dyeing process utilizing said novel dye.

Other objects of the invention will be apparent from the following detailed illustration.

DESCRIPTION OF THE PREFERRED EMBODIMENTS These and other objects of the invention can be ac complished by provision of a novel yellow monoazo dye having the aforesaid formula (I) and a process for preparing the same which comprises coupling a diazotized amine represented by the formula:

SOZCHZCHZY wherein X and X mean the same as above, and Y represents a hydroxy group or an OSO H group; with lsubstituted phenyl-3methyl-5aminopyrazole represented by the formula wherein the benzene nucleus A means the same as above; and treating the resulting mono-azo dye having a hydroxy group as Y in formula (II) with sulfuric acid to convert the B-hydroxyethyl sulfone group to a B-sulfatoethylsulfonyl group.

The amine represented by formula (II) above, one of the raw materials used in the process of the present invention, includes, for example, p-aniline-B- hydroxyethyl sulfone, m-anilineB-hydroxyethyl sulfone, o-aniline-B-hydroxyethyl-sulfone, 2- methoxyaniline5-B-hydroxyethyl sulfone, 2-methoxy-, or ethoxy-SmethylanilineA-B-hydroxyethyl sulfone, 2,5-dimethoxy-, or diethoxy-aniline-4-B-hydroxyet-hylsulfone, Z-chloro aniline-S-B-hydroxyethyl sulfone, 2- methylaniline-S-B-hydroxyethylsulfone, 2-carboxyaniline-4-, or -5-, B-hydroxyethylsulfone, 2-sulfoaniline-5- B-hydroxyethylsulfone, 2.4-dimethoxyaniline-5-B- hydroxyethylsulfone.

These amines may be treated with sulfuric acid to be used in the form ofa sulfuric acid ester. In addition, the acylamine derivatives of these amines can be used by converting a B-hydroxyethylsulfonyl group to a B-sulfatoethylsulfonyl group and simultaneously hydrolyzing the acylamino group. The diazotization of these amines or sulfuric acid esters thereof is carried out by means of conventional methods. These amines can also be treated with nitrosyl sulfuric acid to carry out the sulfuric esterification and diazotization simultaneously.

l-substituted phenyl-3-methyl-5-aminopyrazole, represented by the above formula (111), which is preferably used in the process of the present invention, includes a compound having, as the phenyl nucleus A, for example, 2'-sulfophenyl, 3-sulfophenyl, 4'-sulfophenyl, 2,5-disulfophenyl, 2-chlor-5-sulfophenyl, 2'-chlor- 4'-sulfopheny1, 2',5-dichlor-4-sulfophenyl, 2-chlor 6-methyl-4-sulfophenyl, 2-nitro -4'-sulfophenyl, 2 '-methoxy-5 '-sulfophenyl, 4'-(4 -nitro-2' sulfostyrene)-3-sulfophenyl, etc.

The coupling of diazo compounds mentioned above with the l-substituted pheny1-3-methyl-b aminopyrazole represented by the above formula (111) can be carried out at a wide pH range according to conventional methods, with pH desirably below 7 to maintain the ester structure in case the diazo compound is a sulfuric acid ester.

The resultant monoazo dye having a B-hydroxyethyl sulfone group is treated in concentrated sulfuric acid at relatively lower temperature to make the sulfuric acid ester. The dye may be separated by means of saltingout, etc. after diluting the reaction mixture with ice water.

The dye formed according to the process of the present invention may be widely applied to conventional impregnating, printing and padding dyeing methods.

The impregnating dyeing of cellulose fibers may be carried out in a dyeing bath with added Glaubers salt (or common salt) in the presence of tri-sodium phosphate, sodium hydroxide, sodium carbonate, etc. at a relatively lower temperature.

Padding dyeing may be carried out by applying an aqueous dye solution to fibers and simultaneously or subsequently steam or dry heating at a relatively higher temperature, for example 70 to 180C, in the presence of an acid-binding agent, such as sodium bicar bonate, sodium carbonate, sodium hydroxide, trisodium phosphate, etc., or by padding the fibers which have previously had applied thereto only a solution of dyes, in a bath containing the above-described acidbinding agent at a relatively higher temperature, for example 80-l00C. Also, boiling in water containing a large amount of inorganic salt may be used in place of steam or dry heating. Printing may be carried out by .printing a printing paste containing a dye and a similar acid binding agent (as described above) onto the fiber, and thereafter steam or dry heating the printed fiber at 70180C.; or by heat-treating the fiber printed with a printing paste containing only a dye in a bath containing the acid binding agent; or further by printing printing paste containing the acid binding agent on the fiber which has previously been printed with a paste containing only a dye and successively steam or dry heating it.

Further, a resist with a suitable acid and discharge with a suitable reductant are also possible with the dye of this invention.

Although impregnating dyeing of natural or synthetic polyamidc fibers is conventionally carried out in a neutral or acidic bath, it is preferable to use a suitable cationic surface active agent, or to neutralize the bath with a mild alkali such as ammonia, hexamethylenetetramine, etc. with the present invention. The dye of this invention is novel and highly soluble in water. Fiber material dyed with the dye of the invention has a clear yellow shade with excellent fastness to light and washmg.

The present invention will be illustrated with the following examples, which are of course, not to limit the scope of the present invention. Parts and are both by weight.

EXAM PLE 1 26.8 parts of 2-mcthoxyaniline-5-B-hydroxyethyl sulfone hydrochloride were added to 100 parts of ice water. 15.6 parts of 35% hydrochloric acid were added thereto, and then it was diazotized by adding (dropwise) an aqueous solution containing 6.9 parts of sodium nitrite. After the diazotization was completed, an excess of nitrous acid was decomposed with sulfamic acid. Coupling was completed by adding 130 parts of a neutral aqueous solution containing 25.3 parts by 1- (4-su1fophenyl)-3-methyl-5-aminopyrazole to the diazo solution, and thereafter adding 24 parts of crystalline sodium acetate to neutralize the solution. After making the solution strongly acidic with hydrochloric acid, a precipitated crystal was filtered therefrom and dried. 15 parts of the dried product were added to parts of sulfuric acid at a temperature below 20C. and, after four hours, the solution was poured into ice water, and the resulting precipitate was filtered. The wet residue was placed into water, neutralized with sodium bicarbonate to a pH of 5- 6, and salted out with potassium chloride. The precipitate was filtered and dried at below 60C. 21 parts of a powder containing about 70% of the dye represented by the following structure were obtained:

H 3 NHZ SO31! NSN OZCHZCHZOSO3H 3 N N==N L SO H O CH CH OSO H was obtained, and gave a dyeing similar to that men-' tioned above.

EXAMPLE 2 21 parts of the acid sulfuric ester of a p-aniline-B- hydroxyethylsulfone were mixed with 70 parts of ice water and 15 parts of 35% hydrochloric acid, ]nd ]n aqueous solution containing 5.2 parts of sodium nitrite were added thereto to diazotize. After stirring at below 10C. for 2 hours, the excess of nitrous acid was decomposed with sulfamic acid. Coupling was completed by adding 90 parts of a neutral aqueous solution containing 19 parts of l-(4'-sulfophenyl)-3-methyl-5- aminopyrazole to the diazo-mixture, and then adjusting the pH to -6 with crystalline sodium acetate. After salting out by adding parts of potassium chloride, the crystal was filtered and dried at below 70C. 53 parts of a powder containing about parts of the dye having the following structure were obtained:

2 N SO3H was dissolved in 200 parts of water and 10 parts of anhydrous Glaubers salt were added thereto. After add- 10 ing 10 parts of cotton yarn therein, the temperature was raised to C., and subsequently 2 parts of crystalline trisodium phosphate, 0.2 parts of 40 Be sodium hydroxide solution and 1 part of sodium carbonate were added thereto, and at this temperature the dyeing a sq vtiqr ssa a s ytss yti SO H EXAMPLE 3 When applying the process in Example 1 or 2 using;

an amine or its acid sulfuric ester described in Column A and a l-substituted phenyl-3-methyl-5- aminopyrazole described in Column B, a dye providing dyeing with the shade described in Column C was obtained at good yields.

water and soaping, a bright greenish yellow dyeing 25 with good fastness to light and washing was obtained.

EXAMPLE 5 2 parts of the dye represented by the formula: V

NH N N= I N 5 so H H CH2CH2OSO3H 40 10 parts of urea, and 2 parts of sodium bicarbonate were dissolved in 100 parts of water at a temperature A B C Amine Substituted phenyl shade group in l-substituted phenyl-3-methyl -5-pyrazole (l) Z-methoxy-S-methyl- 3-su|fophenyl reddish yellow aniline-4-fi-hydroxyethylsulfone (2) do. 4-sulfophenyl similar as above (3) m-aniline-B-hydroxy- 4'-sulfophenyl greenish yellow ethylsulfone (4) p-anilinefl hydroxy ethylsulfone 2'-chloro-5'- more greenish yellow sulfophenyl than that in Ex. 1 (5) do. 4'-(4"-nitro-3"- yellow sulfostyryl)-3'- sulfophenyl (6) do. 2'-nitro-4-sulfophenyl yellow (7) 2sulfoaniline-5-B 4'-sulfophenyl greenish yellow -hydroxyethylsulfone (8) Z-meIhyIaniIine-S-B' 4'-sulfophenyl The similar as that hydroxyethylsulfone in Example 1 (9) Z-carboxyaniline-S-B 4-sulfophenyl yellow -hydroxyethylsulfone (l0) o-aniline-B- 3-sulfophenyl greenish yellow hydroxyethylsulfone EXAMPLE 4 below 20C., and a cotton cloth was padded in this so- 0.3 parts of the dye represented by the formula;

lution, and then, after predrying, was steamed at to 103C. for 7 to 10 minutes. Subsequently, when washing with water and soaping, a bright greenish yel- EXAMPLE 8 low dyeing with good fastness to light and washing was obtained, the shade being more greenish than that of Example 4. 2 parts of the dye represented by the formula H=CH OJ HO SOCH CH O N= SO H SO H EXAMPLE 6 were dissolved in 100 parts of water and a cotton cloth was padded in this solution, and, after predrying, was padded in asolution containing 200 parts of salt and 2 2 parts of the dye represented by the formula parts of sodium hydroxide in 100 parts of water. It sub- H Cl S Z N=N l CH2 CHZOSO3H 3 parts of sodium bicarbonate, and 5 parts of urea were sequenfly was Steamed at m 105C for dissolved in 100 parts of water at a temperature below 30 Sitcondsh Washlng Wlth wafer and P Pg 20C., and a cotton cloth was padded in this solution a yellow iy g with g fasmess t0 llght and washing and, after predrying, was cured at 140C. for 2 minutes. was Obtained. Subsequently, when washing with water and soaping, a bright greenish yellow dyeing with good fastness to EXAMPLE 9 light and washing was obtained, the shade being more 2 parts of the dye represented by the formula OOH NH NSO H N:

HO SOCH CH O S CH greenish-yellow than that of Example 5. were dissolved in 100 parts of water, and a cotton cloth was padded in this solution, and, after predrying, was EXAMPLE 7 impregnated in a solution containing 20 parts of so- 2 parts of the dye represented by the formula dium carbonate, 10 parts of salt, and 7 parts of 40Be' 1 part of crystalline trisodium phosphate, and 1 part of sodium hydroxide in 100 parts of water at C. for 3 40 Be sodium hydroxide were dissolved in parts seconds. Subsequently, when washing with water and of water, and a cotton cloth was padded in this solution, soaping, a' greenish yellow dyeing with good fasteness wound up and allowed to stand at 40C. for 10 hours. to light and washing was obtained.

Subsequently, when washing with water and soaping, a yellow dyeing with good fastness to light and washing EXAMPLE 10 was obtained. 0.5 part of the dye represented by the formula CH2CH2OSO3H and 5 parts of urea were dissolved in 30 parts ofhot water, and, after adding 45 parts of sodium alginate, the total was made to 100 parts with water and sodium alginate. A cotton cloth was printed with the paste prepared above, the printed cloth was predried, and thereafter, was impregnated in lOO parts of an aqueous solution having parts of etgmon salt, parts of sodium carbonate, 5 parts of potassium carbonate, 3 parts of 40Be sodium hydroxide and 1 part of sodium silicate at 95C. for 10 seconds. Subsequently, when washing with water and soaping, a yellow dyeing with good fastness to light and washing was obtained.

EXAMPLE 11 0.2 part of the dye represented by the formula HZCHZOSO3H .ued further for about 30 minutes. Then, when washing with water and soaping, a greenish yellow dyeing with good fasteness to light and washing was obtained.

To further amplify upon several aspects of the present invention, generally in the coupling reaction the generally reaction in concentrated sulfonic acid being preferred.

With respect to the terms lower alkyl". and lower alkoxy, utilized in the specification, this means that most preferably 1 or 2 carbon atoms are present.

To further define the salting out procedure, generally from about 2-l0 times the amount of ice water of sulfonic acid utilized is used. Salting out can be performed by adding 5-30% sodium chloride or karium chloride.

To further amplify upon the examples, in Examples 1 and 2, the l-(4'-sulfophenyl)-3-methyl-5- aminopyrazole solution dissolved at a pH of 6-7.5 using sodium carbonate at 10C. Further, in Example 1, coupling occurred at a pH of 2 5, and a temperature of 7C. In Example 2, coupling was at a pH of 2-6 and a temperature of 3-7C.

With respect to the binding agent embodiment of the present invention, generally 0.5- parts of binding.

agent per part of dye are utilized.

What is claimed is: 1. A compound of the formula X and X represent a member selected from the group consisting of a hydrogen atom, chlorine atom, methyl group, methoxy group, ethoxy group, carboxyl group, and sulfonic acid group; A represents a member selected from the group consisting of a hydrogen atom, chlorine atom, methyl group, methoxy group and nitro pyrazole and amine compound are reacted in 1 mole of pyrazole to 1 mole of amine ratio. Temperature of reaction is most preferably within the range 0-25C. Pressure of reaction can vary, but most preferably, atmospheric pressure is used. The reaction generally takes from about 15 minutes to about 5 hours to proceed to completion, the time of reaction being essentially non-critical. The pH should be maintained within the range 2-1l.

group; and n is an integer of 1 or 2.

2. The compound of claim 1 whereinn is l.

3. The compound of claim 1 wherein the moiety For the conversion reaction, generally from about u l.5-10 parts acid are utilized. The temperature of conversion is most preferably within the range 0-40C. 6O Again, this reaction is most preferably conducted at atmospheric pressure, within the time of from l-lO hours. The pH of the media should be strongly acid,

iia member selected from the group consisting of:

so H,

5. The compound of claim 1 which is a member selected from the group consisting of OCH OCH

R SO H OCH3 C1 R aso H CH C1 COOH / SO H (32 H 0 so H and wherein Z- is 6. The compound of claim 1 wherein for (80 1-1) n l, and for A,, n 1, wherein one A moiety is H and the second A moiety is selected from the group consisting of: chloro, methyl, methyl, methoxy and nitro, a methoxy group and a nitro group.

7. The compound of claim 1 wherein for (SO l-l), n l and for A n 2, wherein said compound is selccted from the group consisting of compounds having the following A moiety pairs: chlorine and chlorine: hydrogen and hydrogen: chlorine and methyl.

8. The compound of claim 1 which is:

ocH Z HZCH 050 11 

1. A COMPOUND OF THE FORMULA
 2. The compound of claim 1 wherein n is
 1. 3. The compound of claim 1 wherein the moiety
 4. The compound of claim 1 wherein the moiety
 5. The compound of claim 1 which is a member selected from the group consisting of
 6. The compound of claim 1 wherein for (SO3H)n n 1, and for An n 1, wherein one A moiety is H and the second A moiety is selected from the group consisting of: chloro, methyl, methyl, methoxy and nitro, a methoxy group and a nitro group.
 7. The compound of claim 1 wherein for (SO3H)n n 1 and for An n 2, wherein said compound is selected from the group consisting of compounds having the following A moiety pairs: chlorine and chlorine: hydrogen and hydrogen: chlorine and methyl.
 8. The compound of claim 1 which is: 